Out of interest, does Protex Pestcontrol Co. force you to pay for a one-year contract? I can't remember the name of the company I used some years ago but the 1-year contract that I ended up paying for was unnecessary, as it only took one visit to control the ant problem. The staff then sprayed almost everything in the house every month, even leather sofas.

I had a termite problem which caused me to contact them. I chose to have an annual contract which I intend continuing in June .
They come every month and spray inside and out, also twice a year pump underground.
You can probably have a one time visit If required.